Buckling optimization of variable stiffness composite panels for curvilinear fibers and grid stiffeners

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dc.contributor.authorArranz, Sofía
dc.contributor.authorSohouli, Abdolrasoul
dc.contributor.authorSuleman, Afzal
dc.date.accessioned2022-11-12T18:13:35Z
dc.date.available2022-11-12T18:13:35Z
dc.date.copyright2021en_US
dc.date.issued2021
dc.description.abstractAutomated Fiber Placement (AFP) machines can manufacture composite panels with curvilinear fibers. In this article, the critical buckling load of grid-stiffened curvilinear fiber composite panels is maximized using a genetic algorithm. The skin is composed of layers in which the fiber orientation varies along one spatial direction. The design variables are the fiber orientation of the panel for each layer and the stiffener layout. Manufacturing constraints in terms of maximum curvature allowable by the AFP machine are imposed for both skin and stiffener fibers. The effect of manufacturing-induced gaps in the laminates is also incorporated. The finite element method is used to perform the buckling analyses. The panels are subjected to in-plane compressive and shear loads under several boundary conditions. Optimization results show that the percentage difference in the buckling load between curvilinear and straight fiber panels depends on the load case and boundary conditions.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.identifier.citationArranz, S., Sohouli, A., & Suleman, A. (2021). “Buckling optimization of variable stiffness composite panels for curvilinear fibers and grid stiffness.” Journal of Composites Science, 5(12), 324. https://doi.org/10.3390/jcs5120324en_US
dc.identifier.urihttps://doi.org/10.3390/jcs5120324
dc.identifier.urihttp://hdl.handle.net/1828/14443
dc.language.isoenen_US
dc.publisherJournal of Composites Scienceen_US
dc.subjectvariable stiffness composite structuresen_US
dc.subjectcurvilinearly grid-stiffened panelsen_US
dc.subjectmanufacturing constraintsen_US
dc.subjectbucklingen_US
dc.subjectfinite element analysisen_US
dc.subjectoptimizationen_US
dc.titleBuckling optimization of variable stiffness composite panels for curvilinear fibers and grid stiffenersen_US
dc.typeArticleen_US

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